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Topic: Broken exhaust manifold stud (Read 763 times)

Took a drive to Smileys Racing to buy 5 gallons of VP 110 leaded. Adjusted the idle, checked timing , it's at 12 btdc , then tried to reduce exhaust manifold leak and decided to snap one of the studs.Still has the original turquoise paint on the bolt.

I recently replaced the header with the exhaust manifold and maybe it's possible that with the heating and the cooling and the different expansion rates of cast iron and steel tubing the stud stretched it a little bit because it was fine a month or so ago when I last checked .This stud was drivers side second from front.